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//=============================================================================
//
//                               OpenFlipper
//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
//                           www.openflipper.org
//
//-----------------------------------------------------------------------------
//
//                                License
//
//  OpenFlipper is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
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//
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//  OpenFlipper is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
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//
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//  You should have received a copy of the GNU Lesser General Public License
//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
//
//   $Revision$
//   $Author$
//   $Date$
//
//=============================================================================





//=============================================================================
//
//  CLASS Core - IMPLEMENTATION
//
//=============================================================================


//== INCLUDES =================================================================

// -------------------- mview
#include "Core.hh"
// -------------------- ACG
#include <ACG/Scenegraph/DrawModes.hh>
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#include <ACG/Scenegraph/SceneGraph.hh>
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#include <ACG/QtWidgets/QtFileDialog.hh>
// -------------------- Qt

#include <QKeyEvent>
#include <QSplitter>
#include <QMenuBar>
#include <QToolBox>
#include <QApplication>
#include <QStatusBar>
#include <QMessageBox>
#include <QFile>
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#include <QSettings>
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#include <QPluginLoader>
#include "OpenFlipper/BasePlugin/BaseInterface.hh"
#include "OpenFlipper/BasePlugin/KeyInterface.hh"
#include "OpenFlipper/BasePlugin/MouseInterface.hh"
#include "OpenFlipper/BasePlugin/PickingInterface.hh"
#include "OpenFlipper/BasePlugin/ToolboxInterface.hh"
#include "OpenFlipper/BasePlugin/TextureInterface.hh"
#include "OpenFlipper/BasePlugin/MenuInterface.hh"
#include "OpenFlipper/BasePlugin/INIInterface.hh"
#include "OpenFlipper/BasePlugin/GlobalAccessInterface.hh"

#include "OpenFlipper/INIFile/INIFile.hh"

#include "OpenFlipper/common/GlobalOptions.hh"
#include <OpenFlipper/common/RecentFiles.hh>
#include <OpenFlipper/ACGHelper/DrawModeConverter.hh>

#include <QStringList>
#include <QtScript/QScriptValueIterator>

#include <ACG/Scenegraph/SeparatorNode.hh>

#include "OpenFlipper/BasePlugin/PluginFunctions.hh"
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#include "OpenFlipper/BasePlugin/PluginFunctionsCore.hh"
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#include "OpenFlipper/BasePlugin/RPCWrappers.hh"

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#include <OpenMesh/Core/System/omstream.hh>

#define WIDGET_HEIGHT 800
#define WIDGET_WIDTH  800

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//== IMPLEMENTATION ==========================================================
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/** \brief Constuctor for the Core Widget ( This is stage 1 , call init for stage 2)
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 *
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 * Initialization is working the following way:\n
 * - Setup basic paths \n
 * - Get Options from Option files ( While skipping the OpenFiles Sections as Core is not running )\n
 * - Jump back ( Stage two is done by calling init from main ) so CALL init!!
 * - This Two stage system allows using commandline options which override Option Files
*/
Core::
Core() :
  QObject(),
  nextBackupId_(0),
  coreWidget_(0)
{
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  //init logFile
  logStream_ = 0;
  logFile_ = 0;
  OpenFlipper::Options::logFileEnabled(true);

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  //init nodes
  root_node_scenegraph_ = new ACG::SceneGraph::SeparatorNode(0, "SceneGraph Root Node");
  root_node_ = new ACG::SceneGraph::SeparatorNode(root_node_scenegraph_, "Data Root Node");
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  coordsysNode_ = new ACG::SceneGraph::CoordsysNode(root_node_scenegraph_,"Core Coordsys Node");
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  coordsysNode_->setTraverseMode (BaseNode::NodeFirst | BaseNode::SecondPass);
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   // Add ViewMode All
  ViewMode* vm = new ViewMode();
  vm->name = "All";
  vm->custom = false;
  vm->visibleWidgets = QStringList();
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  viewModes_.push_front(vm);

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  //init ViewerProperties (always for 4 Viewers!)
  std::vector< Viewer::ViewerProperties* > viewerProperties;

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  for (int i=0; i < 4; i++) {
    Viewer::ViewerProperties* viewerProperty = new Viewer::ViewerProperties();
    viewerProperty->snapshotBaseFileName("snap-Viewer-" + QString::number(i) + ".png");
    viewerProperties.push_back( viewerProperty );
  }
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  PluginFunctions::setViewerProperties(viewerProperties);

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  // Get all relevant Paths and Options from option files
  setupOptions();
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  // set discriptions for scriptable slots
  setDescriptions();
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}

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/** \brief Second initialization stage
 *
 * This Stage does the following :\n
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 * - Create the Core GUI Elements (Examiner, Toolbox,...)\n
 * - Create the MenuBar \n
 * - load the Plugins \n
 * - connect the Mouse slots \n
 * - Load all ini files (This includes the Global Option files) \n
 */
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void
Core::init() {

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  // Make root_node available to the plugins ( defined in PluginFunctions.hh)
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  PluginFunctions::setRootNode( root_node_ );
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  PluginFunctions::setSceneGraphRootNode( root_node_scenegraph_ );
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  // Initialize the first object as the root Object for the object tree
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  objectRoot_ =  dynamic_cast< BaseObject* > ( new GroupObject("ObjectRoot") );
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  PluginFunctions::setDataRoot( objectRoot_ );

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  if ( OpenFlipper::Options::gui() ) {
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    // Initialize redraw timer. Will be used to restrict the rendering framerate.
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    redrawTimer_ = new QTimer();
    redrawTimer_->setSingleShot(true);
    connect(redrawTimer_, SIGNAL(timeout()), this, SLOT(updateView()),Qt::DirectConnection);

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    // Initialice scenegraph check timer. Will be used to check for changes in the scenegraph
    scenegraphCheckTimer_ = new QTimer();
    scenegraphCheckTimer_->setSingleShot(false);
    connect(scenegraphCheckTimer_, SIGNAL(timeout()), this, SLOT(checkScenegraphDirty()),Qt::DirectConnection);

    // Will measure the time between redraws
    redrawTime_ = new QTime();
    redrawTime_->start ();
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    if ( OpenFlipper::Options::splash() ) {
      QPixmap splashPixmap(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "splash.png");
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      splash_ = new QSplashScreen(splashPixmap);
      splash_->show();
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      splash_->showMessage("Initializing mainwindow" ,
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                          Qt::AlignBottom | Qt::AlignLeft , Qt::white);
      QApplication::processEvents();
    }
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    coreWidget_ = new CoreWidget(viewModes_ , plugins, coreSlots_);
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    connect(coreWidget_, SIGNAL(clearAll())           , this, SLOT(clearAll()));
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    connect(coreWidget_, SIGNAL(loadMenu())           , this, SLOT(loadObject()));
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    connect(coreWidget_, SIGNAL(addEmptyObjectMenu()) , this, SLOT(slotAddEmptyObjectMenu()));
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    connect(coreWidget_, SIGNAL(saveMenu())           , this, SLOT(saveAllObjects()));
    connect(coreWidget_, SIGNAL(saveToMenu())         , this, SLOT(saveAllObjectsTo()));
    connect(coreWidget_, SIGNAL(loadIniMenu())        , this, SLOT(loadSettings()));
    connect(coreWidget_, SIGNAL(saveIniMenu())        , this, SLOT(saveSettings()));
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    connect(coreWidget_, SIGNAL(applyOptions())       , this, SLOT(applyOptions()));
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    connect(coreWidget_, SIGNAL(saveOptions())        , this, SLOT(saveOptions()));
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    connect(coreWidget_, SIGNAL(recentOpen(QAction*)) , this, SLOT(slotRecentOpen(QAction*)));
    connect(coreWidget_, SIGNAL(exit())               , this, SLOT(slotExit()));
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    connect(coreWidget_, SIGNAL(showPlugins())       , this, SLOT(slotShowPlugins()));
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    connect(coreWidget_, SIGNAL(call(QString,bool&)), this, SLOT(slotCall(QString,bool&)));

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    QRect rect = QApplication::desktop()->screenGeometry();

    uint width = rect.width();
    if ( width > 1000 ) {
      width = 1000;
    }

    uint height = rect.height();
    if ( height > 1000 ) {
      height = 1000;
    }

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#ifdef ARCH_DARWIN
    width = rect.width() - 300;
    height = rect.height() - 150;
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//     coreWidget_->setMaximumSize( width, height  );
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#endif

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    coreWidget_->resize(width,height);
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    coreWidget_->setWindowTitle( OpenFlipper::Options::windowTitle() );

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  }
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  // ======================================================================
  // Create intermediate logger class for Core which will mangle the output
  // ======================================================================
  PluginLogger* newlog = new PluginLogger("Core");
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  loggers_.push_back(newlog);
  connect(this,SIGNAL(log(Logtype, QString )),newlog,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  connect(this,SIGNAL(log(QString )),newlog,SLOT(slotLog(QString )),Qt::DirectConnection);

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  // Connect it to the Master logger
  if ( OpenFlipper::Options::gui() )
    connect(newlog,SIGNAL(log(Logtype, QString )),coreWidget_,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  // connection to file logger
  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLogToFile(Logtype, QString )),Qt::DirectConnection);
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  // ======================================================================
  // Create a logger class for CoreWidget
  // ======================================================================

  if ( OpenFlipper::Options::gui() ){
    PluginLogger* widgetlog = new PluginLogger("CoreWidget");
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    loggers_.push_back(widgetlog);
    connect(coreWidget_,SIGNAL(log(Logtype, QString )),widgetlog,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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    connect(coreWidget_,SIGNAL(log(QString )),widgetlog,SLOT(slotLog(QString )),Qt::DirectConnection);

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    // Connect it to the Master logger
    connect(widgetlog,SIGNAL(log(Logtype, QString )),coreWidget_,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
    connect(widgetlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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    // connection to file logger
    connect(widgetlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLogToFile(Logtype, QString )),Qt::DirectConnection);
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  }
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  // ======================================================================
  // Catch OpenMesh Error logs with an own Logger
  // ======================================================================
  newlog = new PluginLogger("Core ( OpenMesh )",LOGERR);
  omerr().connect(*newlog);
  omerr().disconnect(std::cerr);
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  loggers_.push_back(newlog);
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  // Connect it to the Master logger
  if ( OpenFlipper::Options::gui() )
    connect(newlog,SIGNAL(log(Logtype, QString )),coreWidget_,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  // connection to file logger
  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLogToFile(Logtype, QString )),Qt::DirectConnection);
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  // ======================================================================
  // Catch OpenMesh omout logs with an own Logger
  // ======================================================================
  newlog = new PluginLogger("Core ( OpenMesh )",LOGINFO);
  omout().connect(*newlog);
  omout().disconnect(std::cout);
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  loggers_.push_back(newlog);
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  // Connect it to the Master logger
  if ( OpenFlipper::Options::gui() )
    connect(newlog,SIGNAL(log(Logtype, QString )),coreWidget_,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  // connection to file logger
  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLogToFile(Logtype, QString )),Qt::DirectConnection);
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  // ======================================================================
  // Catch OpenMesh omlog logs with an own Logger
  // ======================================================================
  newlog = new PluginLogger("Core ( OpenMesh )",LOGOUT);
  omlog().connect(*newlog);
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  loggers_.push_back(newlog);
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  // Connect it to the Master logger
  if ( OpenFlipper::Options::gui() )
    connect(newlog,SIGNAL(log(Logtype, QString )),coreWidget_,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  // connection to file logger
  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLogToFile(Logtype, QString )),Qt::DirectConnection);
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  // ======================================================================
  // Log Scripting stuff through a separate logger
  // ======================================================================
  newlog = new PluginLogger("Scripting",LOGOUT);
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  loggers_.push_back(newlog);
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  // Connect it to the Master logger
  if ( OpenFlipper::Options::gui() )
    connect(newlog,SIGNAL(log(Logtype, QString )),coreWidget_,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLog(Logtype, QString )),Qt::DirectConnection);
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  // connection to file logger
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  connect(newlog,SIGNAL(log(Logtype, QString )),this,SLOT(slotLogToFile(Logtype, QString )),Qt::DirectConnection);
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  // connect signal to logger
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  connect(this,SIGNAL(scriptLog(QString )),newlog,SLOT(slotLog(QString )),Qt::DirectConnection);

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  // ======================================================================
  // This connection will tell the plugins, when their Toolbox is active
  // ======================================================================
  ///@todo reimplement
//   connect(module_list,SIGNAL(currentChanged(int)),this,SLOT(slotToolboxSwitched(int)));
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  // Set a reference to the scriptengine for simple rpc calls
  RPC::setScriptEngine(&scriptEngine_);

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  // process Events every 500 msecs during script execution
  scriptEngine_.setProcessEventsInterval( 500 );
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  // Register own print function :
  QScriptValue printFunction = scriptEngine_.newFunction(myPrintFunction);
  printFunction.setProperty("textedit",scriptEngine_.newQObject(this));
  scriptEngine_.globalObject().setProperty("print", printFunction);
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  // Register Vector Type to ScriptEngine ( is Vec3d )
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  qScriptRegisterMetaType(&scriptEngine_,
                          toScriptValueVector,
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                          fromScriptValueVector,
                          scriptEngine_.newQObject(&vec3dPrototype_));
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  // set a constructor to allow creation via Vector(x,y,z)
  QScriptValue ctor = scriptEngine_.newFunction(createVector);
  scriptEngine_.globalObject().setProperty("Vector", ctor);
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//    // Register ObjectId Type to ScriptEngine ( is int )
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//   qScriptRegisterMetaType(&scriptEngine_,
//                           toScriptValueObjectId,
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//                           fromScriptValueObjectId);
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//
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//   // set a constructor to allow creation via Vector(x,y,z)
//   ctor = scriptEngine_.newFunction(createObjectId);
//   scriptEngine_.globalObject().setProperty("ObjectId", ctor);
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  // Register idList Type to scripting Engine
  qScriptRegisterSequenceMetaType< idList >(&scriptEngine_);

  qScriptRegisterSequenceMetaType< QVector< int > >(&scriptEngine_);
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  // Register Matrix Type to scripting Engine ( is ACG::Matrix4x4d )
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  qScriptRegisterMetaType(&scriptEngine_,
                          toScriptValueMatrix4x4 ,
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                          fromScriptValueMatrix4x4,
                          scriptEngine_.newQObject(&matrix4x4Prototype_));
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  // set a constructor to allow creation via Matrix(x,y,z)
  QScriptValue matrix4x4ctor = scriptEngine_.newFunction(createMatrix4x4);
  scriptEngine_.globalObject().setProperty("Matrix4x4", matrix4x4ctor);
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  // Collect Core scripting information
  QScriptValue scriptInstance = scriptEngine_.newQObject(this,
                                                         QScriptEngine::QtOwnership,
                                                         QScriptEngine::ExcludeChildObjects |
                                                         QScriptEngine::ExcludeSuperClassMethods |
                                                         QScriptEngine::ExcludeSuperClassProperties
                                                         );
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  scriptEngine_.globalObject().setProperty("core", scriptInstance);
  emit log(LOGOUT,"Core Scripting initialized with Name : core  ");
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  emit log(LOGOUT,"Available scripting functions :");
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  QScriptValueIterator it(scriptInstance);
  while (it.hasNext()) {
    it.next();
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    /// Skip all signals for function calls
    if ( checkSignal( this, it.name().toAscii() ) )
      continue;
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    scriptingFunctions_.push_back( "core." + it.name() );
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    emit log(LOGOUT,"\t" + it.name());
  }
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  emit log(LOGOUT,"=============================================================================================");
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  loadPlugins();
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  if ( OpenFlipper::Options::gui() ) {
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    //register keyBinding for all scripting slots
    coreWidget_->slotRegisterSlotKeyBindings();

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    //get keyAssignments from config files
    restoreKeyBindings();

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    if ( OpenFlipper::Options::defaultToolboxMode( ) != "" )
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      coreWidget_->setViewMode( OpenFlipper::Options::defaultToolboxMode() );
    else
      coreWidget_->setViewMode("All");
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    for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i ) {
      connect( coreWidget_->examiner_widgets_[i], SIGNAL(signalMouseEvent(QMouseEvent*)),
              this                              , SLOT(slotMouseEvent(QMouseEvent*)));
      connect( coreWidget_->examiner_widgets_[i], SIGNAL(signalMouseEventIdentify(QMouseEvent*)),
              this                              , SLOT(slotMouseEventIdentify(QMouseEvent*)));
      connect( coreWidget_->examiner_widgets_[i], SIGNAL(signalWheelEvent(QWheelEvent *, const std::string &)),
              this                              , SLOT(slotWheelEvent(QWheelEvent *, const std::string &)));
    }
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  }
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  // ===============================================================================================
  // Load Settings from configuration files
  // ===============================================================================================

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  QStringList optionFiles = OpenFlipper::Options::optionFiles();
  for ( int i = 0 ; i < (int)optionFiles.size(); ++i) {
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    if ( OpenFlipper::Options::gui() && OpenFlipper::Options::splash() ) {
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      splash_->showMessage("Loading Configuration File " + QString::number(i) + "/"  + QString::number(optionFiles.size()) ,
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                           Qt::AlignBottom | Qt::AlignLeft , Qt::white);
      QApplication::processEvents();
    }
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    // Load global ini files. Use only plugin global options from these files as the
    // rest has been loaded at the beginning.
    openIniFile( optionFiles[i] ,false,true,false);
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  }

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  // ===============================================================================================
  // Load Settings from configuration files
  // ===============================================================================================
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  if ( OpenFlipper::Options::lang().contains("UTF") || OpenFlipper::Options::lang().contains("utf") ) {
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    emit log(LOGWARN,"UTF8-Locale used!");
//     emit log(LOGWARN,"Only OFF files are fully supported with UTF8. Others might fail.");
//     emit log(LOGWARN,"You can change your locale by :");
//     emit log(LOGWARN,"export LANG=C");
//     emit log(LOGWARN,"Work is in progress to resolve this issue.");
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  }
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  if ( OpenFlipper::Options::gui() ) {
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    QSettings windowStates(QDir::home().absolutePath() + OpenFlipper::Options::dirSeparator() + ".OpenFlipper" +
                           OpenFlipper::Options::dirSeparator() +  "WindowStates.dat", QSettings::IniFormat);
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    //try to restore the windowState
    coreWidget_->restoreState (windowStates.value("Core/Window/State").toByteArray ());
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    //try to restore the geometry
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    coreWidget_->restoreGeometry (windowStates.value("Core/Window/Geometry").toByteArray ());
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    coreWidget_->toolSplitter_->restoreState (windowStates.value("Core/ToolSplitter").toByteArray ());
    coreWidget_->splitter_->restoreState (windowStates.value("Core/LogSplitter").toByteArray ());
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    coreWidget_->show();
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    applyOptions();

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    windowStates.beginGroup ("Core");
    windowStates.beginGroup ("LogSlider");
    coreWidget_->slidingLogger_->restoreState (windowStates);
    windowStates.endGroup ();
    coreWidget_->toolBox_->restoreState (windowStates);
    windowStates.endGroup ();

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    if ( OpenFlipper::Options::splash() ) {
      splash_->finish(coreWidget_);
    }
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    // start checking for scenegraph changes
    scenegraphCheckTimer_->setInterval (1000 / OpenFlipper::Options::maxFrameRate());
    scenegraphCheckTimer_->start ();
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  }
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}

//-----------------------------------------------------------------------------

Core::~Core()
{
   for ( uint i = 0 ; i < plugins.size() ; ++i ){
     BaseInterface* basePlugin = qobject_cast< BaseInterface * >(plugins[i].plugin);
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     // Dont call exit if we cannot get the Plugin
     if ( basePlugin )
       if ( checkSlot( plugins[i].plugin , "exit()" ) )
          QMetaObject::invokeMethod(plugins[i].plugin, "exit",  Qt::DirectConnection);
  }
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  objectRoot_->deleteSubtree();
  delete objectRoot_;
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  // Clean up loggers
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  for ( uint i = 0 ; i < loggers_.size(); ++i )
    delete loggers_[i];

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}

//-----------------------------------------------------------------------------

void
Core::slotMouseEventIdentify( QMouseEvent* _event )
{
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//   // Dont do anything as a context Menu will popup on right button click
//   if ( _event->button() == Qt::RightButton )
//     return;
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  const QObject* senderPointer = sender();
  unsigned int examinerId = 0;

  if ( senderPointer == 0 ) {
    std::cerr << "Error : slotMouseEventIdentify directly called! This should only be called by an examiner" << std::endl;
  } else {
    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i ) {
      if ( senderPointer == coreWidget_->examiner_widgets_[i] ) {
        examinerId = i;
        break;
      }
    }

  }

  PluginFunctions::setActiveExaminer( examinerId );

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  emit PluginMouseEventIdentify( _event );
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}

//-----------------------------------------------------------------------------


void
Core::slotMouseEvent( QMouseEvent* _event )
{
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//   // Dont do anything as a context Menu will popup on right button click
//   if ( _event->button() == Qt::RightButton )
//     return;
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  const QObject* senderPointer = sender();
  unsigned int examinerId = 0;

  if ( senderPointer == 0 ) {
    std::cerr << "Error : slotMouseEvent directly called! This should only be called by an examiner" << std::endl;
  } else {
    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i ) {
      if ( senderPointer == coreWidget_->examiner_widgets_[i] ) {
        examinerId = i;
        break;
      }
    }

  }

  PluginFunctions::setActiveExaminer( examinerId );

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  emit PluginMouseEvent(_event );
}

//-----------------------------------------------------------------------------

void
Core::slotWheelEvent( QWheelEvent * _event, const std::string & _mode)
{
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  const QObject* senderPointer = sender();
  unsigned int examinerId = 0;

  if ( senderPointer == 0 ) {
    std::cerr << "Error : slotWheelEvent directly called! This should only be called by an examiner" << std::endl;
  } else {
    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i ) {
      if ( senderPointer == coreWidget_->examiner_widgets_[i] ) {
        examinerId = i;
        break;
      }
    }

  }

  PluginFunctions::setActiveExaminer( examinerId );

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  emit PluginWheelEvent(_event , _mode );
}

//-----------------------------------------------------------------------------

void
Core::slotAddPickMode( const std::string _mode ) {
  if ( OpenFlipper::Options::gui() )
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    for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i )
      coreWidget_->examiner_widgets_[i]->addPickMode(_mode);

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}

//-----------------------------------------------------------------------------

void
Core::slotAddHiddenPickMode( const std::string _mode ) {
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  if ( OpenFlipper::Options::gui() )
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    for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i )
      coreWidget_->examiner_widgets_[i]->addPickMode(_mode,false,1000,false);

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}

//-----------------------------------------------------------------------------

 /** Update the view in the examiner widget
  */
void Core::updateView() {
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  if ( OpenFlipper::Options::doSlotDebugging() ) {
    if ( sender() != 0 ) {
      if ( sender()->metaObject() != 0 ) {
        emit log(LOGINFO,"updateView() called by " + QString( sender()->metaObject()->className() ) );
      }
    }
  }

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  if ( OpenFlipper::Options::restrictFrameRate() ) {
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    int elapsed = redrawTime_->elapsed ();
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    if ( elapsed < 1000 / OpenFlipper::Options::maxFrameRate() )
    {
	// redraw time not reached ... waiting for timer event for next redraw
	if ( redrawTimer_->isActive() ) {
	  if ( OpenFlipper::Options::doSlotDebugging() )
	    emit log(LOGINFO,"Too early for redraw! Delaying request from " + QString( sender()->metaObject()->className() ) );
	  return;
	}
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	// Start the timer
	redrawTimer_->start( (1000 / OpenFlipper::Options::maxFrameRate()) - elapsed);
	return;
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    }
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    else if ( redrawTimer_->isActive() )
	redrawTimer_->stop ();
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  }

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  redrawTime_->restart ();
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  if ( OpenFlipper::Options::gui() && !OpenFlipper::Options::loadingSettings() && !OpenFlipper::Options::redrawDisabled() ) {
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    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
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      coreWidget_->examiner_widgets_[i]->updateGL();

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  }
}

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//-----------------------------------------------------------------------------

 /** Check if scenegraph is dirty and initiate redraw
  */
void Core::checkScenegraphDirty() {
  if ( true )
  {
    ACG::SceneGraph::CheckDirtyAction action;
    ACG::SceneGraph::traverse( root_node_scenegraph_, action );
    if ( action.isDirty () )
      emit updateView ();
  }
}

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//-----------------------------------------------------------------------------

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void Core::restrictFrameRate( bool _enable ) {
  OpenFlipper::Options::restrictFrameRate( _enable );
}

//-----------------------------------------------------------------------------

void Core::setMaxFrameRate( int _rate ) {
  OpenFlipper::Options::maxFrameRate( _rate );
  OpenFlipper::Options::restrictFrameRate( true );
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  // update Timer to new framerate
  scenegraphCheckTimer_->setInterval (1000 / OpenFlipper::Options::maxFrameRate());
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}

//-----------------------------------------------------------------------------

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void
Core::clearAll()
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{
  objectRoot_->deleteSubtree();
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  emit allCleared();
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  emit signalObjectUpdated(-1);
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  slotScriptInfo( "core" , "clearAll()"  );
}

//-----------------------------------------------------------------------------

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void
Core::exitApplication()
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